CPU_VS_GPU / 2026-09-11
AMD Ryzen 5 2600vsNVIDIA RTX 5090
Complete bottleneck analysis at 1080p, 1440p, Ultrawide (UWQHD/SUWQHD), and 4K with estimated FPS for popular games.
56%
ESTIMATED CPU BOTTLENECK
Your CPU (Ryzen 5 2600) cannot feed the RTX 5090 fast enough at 2560x1440. The GPU sits waiting for frames, causing stutter and noticeable drops. A CPU upgrade is the highest-impact change you can make.
Load estimated by the model, not measured on your PC.
- PROCESSORAMD Ryzen 5 2600
- GRAPHICSNVIDIA RTX 5090
- MEMORY16GB DDR4/DDR5
- RESOLUTION2560x1440
Average across the demanding titles at 2560x1440.
Average across the competitive titles, where the processor leads.
What the build draws (790 W) plus headroom.
DEEP-DIVE ANALYSIS
GENERATED BY THE ENGINEAre the AMD Ryzen 5 2600 and the NVIDIA RTX 5090 a good match? To find out we modelled the pair from 1080p up to 4K, cross-referencing the model's gaming scores for the CPU (43/100) and the GPU (96/100), calibrated against measured benchmarks rather than synthetic scores, with the demand profile of each game.
Verdict: play this build at 5K
The Ryzen 5 2600 sets the limit at both ends of the range, though it loosens as resolution climbs: ~62% CPU bottleneck at 1080p against ~29% at 4K. We put the target at 5K: the highest of the usual 16:9 sizes where AAA titles still return 67 FPS, which is above 60. The table below breaks out all twelve resolutions on their own, ultrawide formats included.
As you climb from 1080p to 4K, the load shifts from the processor toward the graphics card: every extra pixel lands on the RTX 5090. Here, efficiency moves from 38% at 1080p to 71% at 4K — which shows the part the frame rate depends on at each end.
Down to real numbers: In esports titles like Valorant this pair flies — around 245 FPS at 1080p, plenty for a high-refresh monitor. At the other end, a demanding AAA like Elden Ring drops to ~60 FPS at 4K, which is where the RTX 5090's ceiling really shows. Overall, expect about 77 FPS average in AAA games at 1080p and around 76 FPS at 4K.
[CPU] Ryzen 5 2600
The Ryzen 5 2600 (43/100 on the model's gaming scale) brings 6 cores and 12 threads and determines how many frames per second the system can prepare.
[GPU] RTX 5090
The RTX 5090 (96/100 on the model's gaming scale) supplies the raster muscle of the build. Its 32 GB of GDDR7 set how far it can go on resolution and texture quality before video memory runs short.
Beyond the FPS: The graphics card is about 7 years newer than the processor, so watch that the Ryzen 5 2600 doesn't fall short in the most CPU-dependent games. You're combining an AMD platform with an NVIDIA GPU — a perfectly valid mix that imposes no penalty.
WHAT TO CHANGE, AND WHAT IT COSTS
At 1440p the Ryzen 5 2600 sets the frame rate and leaves part of the RTX 5090 idle. The cheapest processor in our catalogue that keeps the card fully fed and clears our bar (at least 10% more frames) is the Intel Core i9-14900KS: about 175% more in this model, with this card and 16 GB. It uses a different socket (LGA1700 instead of AM4), so the cost includes a motherboard.
The gain is the model's estimate at 2560x1440 with 16 GB, not a measurement of your PC, and prices change: check them at the retailer before deciding.
PRICE OF THIS PAGE'S PAIRING
Affiliate links — we earn a small commission at no cost to you. Full disclosure
SPECIFICATIONS
CATALOGUE DATA[CPU] AMD Ryzen 5 2600
- Cores6C / 12T
- Clock3.4 – 3.9 GHz
- TDP65 W
- SocketAM4
- Single-thread2,234
- Multi-thread13,126
- L3 cache16 MB
[GPU] NVIDIA RTX 5090
- VRAM32 GB GDDR7
- Memory bus512-bit
- TDP575 W
- G3D Mark57,120
- Memory bandwidth1792 GB/s
BOTTLENECK BY RESOLUTION
SYNERGY · AVERAGE FPSYour CPU (Ryzen 5 2600) cannot feed the RTX 5090 fast enough at 1920x1080. The GPU sits waiting for frames, causing stutter and noticeable drops. A CPU upgrade is the highest-impact change you can make.
Your CPU (Ryzen 5 2600) cannot feed the RTX 5090 fast enough at 2560x1440. The GPU sits waiting for frames, causing stutter and noticeable drops. A CPU upgrade is the highest-impact change you can make.
Your CPU (Ryzen 5 2600) cannot feed the RTX 5090 fast enough at 3440x1440 (Ultrawide 21:9). The GPU sits waiting for frames, causing stutter and noticeable drops. A CPU upgrade is the highest-impact change you can make.
Your CPU (Ryzen 5 2600) cannot feed the RTX 5090 fast enough at 5120x1440 (Super Ultrawide 32:9). The GPU sits waiting for frames, causing stutter and noticeable drops. A CPU upgrade is the highest-impact change you can make.
Your CPU (Ryzen 5 2600) partially limits the RTX 5090 at 4K. In CPU-heavy scenes you will lose frames. Consider a CPU upgrade or a higher target resolution.
ESTIMATED FPS BY GAME
1920x1080SYSTEM DIAGNOSTICS
POWER · VRAM & PCIe · RAMPOWER ESTIMATION
The Ryzen 5 2600 (65W) and RTX 5090 (575W) add up to roughly 640W under load. Adding 150W for the rest of the system gives 790W, and with a 30% transient margin, 1050W is the safe figure.
VIDEO MEMORY AND PCIe
The RTX 5090's memory bus (512-bit) and bandwidth (1792 GB/s) describe its own video memory, meaning how fast the card reads its 32 GB of GDDR7, not the PCIe link to the processor. The PCIe link depends on the card, the processor and the motherboard slot together; our catalogue does not record PCIe generation or lane count, so the model does not estimate it. It matters most for cards with an eight-lane interface in older PCIe 3.0 boards: check the card's and the board's specifications.
SYSTEM MEMORY
This page assumes 16 GB in dual channel. At 5K, the resolution recommended above, that meets the model's capacity target of 16 GB (enough for three in four of the games it covers), so more capacity would add little or nothing there. The target stays at 16 GB even at 4K, so a larger kit is for heavy multitasking or mods, not for these games. Memory speed and a second channel act on the processor's ceiling instead: they matter in the games the CPU limits, by an amount that depends on the game, and the calculator lets you enter your own kit.
HOW THIS PAGE IS CALCULATED
ENGINE v2026.08 · 2026-09-11CALCULATED, NOT WRITTEN
Every figure and every sentence comes from the same deterministic engine, driven by the catalogue specifications. That is what makes it reproducible: with the same engine version (2026.08) and the same catalogue, the same pairing always gives the same result. When either changes, the version and date above change with it, and the changelog says why.
WHERE THE DATA COMES FROM
Specifications come from the official AMD, Intel and NVIDIA datasheets together with PassMark and TechPowerUp. The gaming indices are calibrated against frame rates published by review outlets (TechPowerUp, TechSpot / Hardware Unboxed, Tom's Hardware, Gamers Nexus, Digital Foundry) rather than synthetic scores. That data is compiled, not measured here: this site runs no test bench of its own.
STATED LIMITS
Figures estimate native raster performance at high/ultra quality, with no ray tracing, upscaling or frame generation. We do not yet publish an externally validated error margin — the accuracy page states exactly where that stands.
* Affiliate disclosure: the Amazon links exist to show pricing. As an Amazon Associate we earn from qualifying purchases at no extra cost to you. Recommendation order is decided by the engine and does not depend on commission.
TRY WITH YOUR OWN HARDWARE
Customize RAM, resolution, and discover upgrade recommendations.
FREQUENTLY ASKED QUESTIONS
5Does the AMD Ryzen 5 2600 bottleneck the NVIDIA RTX 5090?
The Ryzen 5 2600 sets the limit at both ends of the range, though it loosens as resolution climbs: ~62% CPU bottleneck at 1080p against ~29% at 4K. Overall, there is some mismatch depending on resolution, with 61% average efficiency across the 12 resolutions our model tests. The resolution we would target with this pair is 5K, where AAA games average 67 FPS.
How many FPS do the Ryzen 5 2600 and RTX 5090 get at 1080p?
At 1080p this combination averages about 77 FPS in AAA games and around 164 FPS in esports titles. In Valorant we estimate up to 245 FPS.
Is this pairing good for 4K gaming?
Yes. At 4K this pairing averages about 76 FPS in AAA titles, at or above the 60 FPS we treat as smooth.
What power supply do I need for the Ryzen 5 2600 and RTX 5090?
With an estimated combined draw of 640W across CPU and GPU, we recommend at least a 1050W 80+ Gold supply (ideally ATX 3.0) to run with headroom.
Is the RTX 5090's 32 GB of VRAM enough?
In the model, 32 GB covers all 11 games it tracks even at 4K with high textures, so video memory is not the constraint for this pairing.